Watermelon
Watermelon (Citrullus lanatus), belonging to the Cucurbitaceae family, is typical of warm, sunny regions and appreciated for its large, juicy fruits. Its taproot system is deep and well-branched, capable of penetrating loose, well-drained soils, but sensitive to waterlogging, compact soils and salinity. Nutritionally, it requires abundant potassium and calcium to enhance sweetness, firmness and pulp quality, while nitrogen must be split to avoid excessive vegetative growth (maintaining a balanced vegetative/reproductive ratio is essential). Deficiencies in microelements such as boron and magnesium or water stress may compromise flowering and fruit setting. Main threats include powdery mildew, fusarium wilt, anthracnose and viruses, with significant impacts on yield and fruit quality.
Transplant
In watermelon, the post-transplant phase is particularly delicate, and early stress can slow establishment, compromising subsequent vegetative development. Thermal shocks, wind, excessive solar radiation, cold soils or waterlogged conditions reduce plant metabolic efficiency and hinder water and nutrient absorption, causing slow growth, wilting and chlorosis in young seedlings.
Use of SPRINTALGA® stimulates rapid root formation and elongation, improving the rhizosphere environment. Thanks to its biologically active compounds, it promotes faster establishment of watermelon plants, improves uniformity and ensures optimal initiation of the production cycle.
Use of SPRINTALGA® stimulates rapid root formation and elongation, improving the rhizosphere environment. Thanks to its biologically active compounds, it promotes faster establishment of watermelon plants, improves uniformity and ensures optimal initiation of the production cycle.
Flowering and Fruit Set
In watermelon cultivation, the flowering and fruit-set phases are particularly sensitive to environmental stresses such as temperature fluctuations, insufficient water availability or nutritional imbalances. When these factors occur, flowering may be non-uniform, fruit set irregular and ovary development impaired, resulting in increased fruit drop or formation of small, misshapen fruits.
Foliar application of FOLICIST® stabilizes physiological processes during these critical phases, promoting more homogeneous flowering and more regular fruit set. This enables the plant to express better productivity, achieve more desirable fruit sizes and obtain fruits with higher commercial value.
Foliar application of FOLICIST® stabilizes physiological processes during these critical phases, promoting more homogeneous flowering and more regular fruit set. This enables the plant to express better productivity, achieve more desirable fruit sizes and obtain fruits with higher commercial value.
Soil Salinity
In watermelon cultivation, excessive soil salinity is a frequent agronomic issue, especially in irrigated areas or soils prone to sodium (Na⁺) accumulation. High electrical conductivity (EC) leads to nutritional imbalances and reduces root capacity to absorb water, resulting in reduced vegetative growth, poor fruit development and decreased yield.
Introducing REDUSAL™ into fertigation programs helps limit soil salinity by promoting mobilization and leaching of excess sodium. This restores a more favorable root-zone environment, enhancing balanced plant growth and contributing to more uniform, high-quality watermelon production.
Introducing REDUSAL™ into fertigation programs helps limit soil salinity by promoting mobilization and leaching of excess sodium. This restores a more favorable root-zone environment, enhancing balanced plant growth and contributing to more uniform, high-quality watermelon production.
Physiological Wilting
Physiological wilting in cucurbits occurs mainly during high fruit load, when water and nutrient demand is high. Water stress, irregular irrigation, drought, and calcium or potassium deficiencies reduce cell turgor, weaken cell walls, and cause leaf necrosis. High temperatures and intense sunlight worsen the condition by increasing evapotranspiration and plant stress.
Accurate irrigation management, combined with the application of NITROCAM® during vegetative growth, helps maintain an adequate calcium supply to plant tissues and fruits, preventing physiological wilting. This results in more balanced plants and harvests characterized by firm, uniform fruits with more stable commercial quality.
Accurate irrigation management, combined with the application of NITROCAM® during vegetative growth, helps maintain an adequate calcium supply to plant tissues and fruits, preventing physiological wilting. This results in more balanced plants and harvests characterized by firm, uniform fruits with more stable commercial quality.
Fungal Diseases
In watermelon, fungal root diseases represent a major challenge, with pathogens such as Pythium aphanidermatum attacking roots and crown, causing rot, wilting and reduced absorption of water and nutrients. Affected plants show stunted growth, yellowing leaves and small or misshapen fruits. Agronomic factors such as excessive irrigation or compact soils can further increase crop vulnerability.
Products from the PHOSFIK® line - applicable via foliar spray or fertigation- nourish plants and help strengthen plant tissues, making crops more robust and productive. Providing highly bioavailable phosphorus, these products promote the development of more uniform and resilient plants, contributing to higher yields and improved final harvest quality.
Products from the PHOSFIK® line - applicable via foliar spray or fertigation- nourish plants and help strengthen plant tissues, making crops more robust and productive. Providing highly bioavailable phosphorus, these products promote the development of more uniform and resilient plants, contributing to higher yields and improved final harvest quality.
